Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dao doanh do snippets" » "dao doanh code snippets", "cao doanh do snippets", "dao danh do snippets", "dao thanh do snippets", "dao doanh dao snippets", "dao doanh co snippets", "dao doan do snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dao doanh do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao doanh do snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dao doanh do snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao doanh do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.